Xeon EC5509 's Advantages
Higher base frequency (2GHz vs 1.8GHz)
Xeon D 2752TER 's Advantages
Released 12 years late
Higher specification of memory (2667 vs 1066)
Newer PCIe version (4 vs 2)
Larger L3 cache size (20MB vs 8MB)
More modern manufacturing process (10nm vs 45nm)
Lower TDP (77W vs 85W)